I have some ww growing in 4" pots, they are about 2.5 weeks old.I have spotting on the leaves and the leaves are dieing. After reading some of the other folks problems I know that the PH is to high it's about 7.5. Could someone please tell me the easiest and fastest way to bring down the PH to about 6.0 before my girls die. They are growing in 3 year old horse manure that has been limed,peat moss and vermiculite (1/3 each), water ph is about 6.5. This site rocks! thank you all!!